Relationships get put to the test when secrets are revealed in the Summer of Answers. In Season 6, Episode 2 of the hit show Pretty Little Liars, Aria's mother Ella Montgomery (Holly Marie Combs) struggles with the continuing torment of the mysterious A. Looking stylish and professional with her flowing dark locks and black blazers, she might be the best looking teach at Rosewood High, but behind that pretty face are some ugly secrets.